Home / 56,439.27-77,889.69-31,288.77

Finding the Fourth Proportional to 56,439.27, 77,889.69 and 31,288.77

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Solution

The fourth proportional to 56,439.27, 77,889.69 and 31,288.77 is: 43,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,439.27 : 77,889.69 = 31,288.77 : x
  2. Step 2: Convert to fraction form
    56,439.27/77,889.69 = 31,288.77/x
  3. Step 3: Cross multiply
    56,439.27x = 77,889.69 × 31,288.77
  4. Step 4: Simplify right side
    56,439.27x = 2,437,072,595.78
  5. Step 5: Solve for x
    x = 2,437,072,595.78/56,439.27
  6. Step 6: Final answer
    x = 43,180.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.